5.0 mL sample of hydrogen gas is collected at a pressure of 97.5 kPa when the temperature is 18°C. Calculate the volume this gas would occupy at STP in Liters.
STP stands for Standard Temperature and Pressure. This means that the temperature is 0°C and the pressure is 101.3 kPa = 1 atm.
2. (11 pts) Balance the following equation: _____ H2 + _____ N2 → _____NH3
A. Whattypeofreactionisthis?________________________
B. Arethenumberofmolesconservedinthebalancedequation?Justifyyourreasoningin complete sentences.
C. Howdoesthebalancedequationsupportthelawofconservationofmass,ingrams?Justify your reasoning in complete sentences.
D. Howmanymolesofammonia(NH3)canbeproducedfromthereactionof4.0litersofhydrogen at 50.0oC and 1.2atm of pressure with excess nitrogen?
Ans to 2D: _____________________

Standard Pressures: 1 atm = 760 torr = 760 mmHg = 101.3 kPa = 101,300 Pa = 14.7 psi
Water Vapor Pressure Table
TP (°C) (mmHg)
TP (°C) (mmHg)
TP (°C mmHg)
0.0 4.6
5.0 6.5 10.0 9.2 12.5 10.9 15.0 12.8 15.5 13.2 16.0 13.6 16.5 14.1 17.0 14.5 17.5 15.0 18.0 15.5 18.5 16.0 19.9 16.5
19.5 17.0 20.0 17.5 20.5 18.1 21.0 18.6 21.5 19.2 22.0 19.8 22.5 20.4 23.0 21.1 23.5 21.7 24.0 22.4 24.5 23.1 25.0 23.8 26.0 25.2
27.0 26.7 28.0 28.3 29.0 30.0 30.0 31.8 35.0 42.2 40.0 55.3 50.0 92.5 60.0 149.4 70.0 233.7 80.0 355.1 90.0 525.8 95.0 633.9
100.0 760.0
3. (8 pts) Ammonium nitrite decomposes to give off nitrogen gas and liquid water. How many grams of ammonium nitrite must have reacted if 2.58 L of gas was collected over water in a gas collecting tube at 21.0oC and 97.8 kPa?
Balanced equation: _______________________________________________________________
Ans to 3: _________________
(6 pts) Will the volume of nitrogen (from the previous problem) INCREASE, DECREASE or remain the SAME if... *Explain briefly*
A. ...the experiment is done at significantly higher temperature? __________
B. ...the amount of ammonium nitrite was increased? __________
C. ...the experiment was not collected over water? __________

4. (10 pts) 900.0 mL of 3.00M phosphoric acid, H3PO4, reacts with 235 grams of iron (III) carbonate. Balanced Equation: Fe2(CO3)3 + 2H3PO4 → 2FePO4 + 3H2O + 3CO2
a. Determine the limiting reactant. Show all work!
Ans to 4a: _________________
b. How many milliters of carbon dioxide gas can be produced at 78°C at 45.5 psi pressure with 900.0 mL of 3.00M phosphoric acid and 235 grams of iron (III) carbonate?
Ans to 4b: _________________

Answers

Answer 1

1. To find the volume of a gas at STP, we can use the ideal gas law, which is an equation that relates the pressure, volume, temperature and amount of a gas. The equation is:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant and T is the temperature.

We can rearrange this equation to find V:

V = nRT/P

We need to make sure that we use consistent units for P, V, T and R. Since we are given P in kPa and T in °C, we can use R = 8.31 J/(K⋅mol) and convert T to K by adding 273.15.

We also need to find n, which is the number of moles of hydrogen gas. We can use the molar mass of hydrogen, which is 2.02 g/mol, to convert the given mass of 5.0 mL to moles. Since 1 mL of gas at STP has a mass of 0.0899 g, we have:

5.0 mL × 0.0899 g/mL ÷ 2.02 g/mol = 0.00222 mol

Now we can plug in the values into the equation for V:

V = (0.00222 mol)(8.31 J/(K⋅mol))(273.15 + 18) K / (97.5 kPa)

V = 0.00507 m^3

To convert m^3 to L, we multiply by 1000:

V = 5.07 L

Therefore, the volume of hydrogen gas at STP is about 5.07 L.

2. To balance the equation for the reaction of hydrogen and nitrogen to form ammonia, we need to make sure that the number of atoms of each element is equal on both sides of the equation. We can do this by adjusting the coefficients (the numbers in front of each compound) until they match.

One possible way to balance the equation is:

3H2 + N2 → 2NH3

A. This type of reaction is called a synthesis reaction or a combination reaction, because two or more substances combine to form a single product.

B. The number of moles are conserved in the balanced equation, because there is no change in the total number of molecules involved in the reaction. According to the balanced equation, three moles of hydrogen react with one mole of nitrogen to produce two moles of ammonia.

C. The balanced equation supports the law of conservation of mass, which states that mass cannot be created or destroyed in a chemical reaction. According to the balanced equation, the total mass of the reactants is equal to the total mass of the product, because each atom has a fixed mass and no atoms are lost or gained in the reaction.

D. To find how many moles of ammonia can be produced from 4.0 liters of hydrogen at 50°C and 1.2 atm of pressure with excess nitrogen, we need to use the ideal gas law again to find how many moles of hydrogen are present:

PV = nRT

n = PV/RT

n = (1.2 atm)(4.0 L) / ((0.082 L⋅atm)/(K⋅mol))(273 + 50) K)

n = 0.19 mol

Since we have excess nitrogen, hydrogen is the limiting reactant, meaning that it will be completely consumed in the reaction and determine how much ammonia can be produced.

According to the balanced equation, three moles of hydrogen produce two moles of ammonia, so we can use this ratio to find how many moles of ammonia are produced from 0.19 mol of hydrogen:

(2 mol NH3 / 3 mol H2) × 0.19 mol H2 = 0.13 mol NH3

Therefore, about 0.13 moles of ammonia can be produced from 4.0 liters of hydrogen at 50°C and 1.2 atm with excess nitrogen.

Answer 2
Can you put a photo we can’t understand anything of this text

Related Questions

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acceleration

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I believe it is mass? Since gravity tells the weight of something. If its wrong I apologize. But consider the rest focus more on speed.

what best describe the process of percipitation in the water cycle

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Answer:

Precipitation is water released from clouds in the form of rain, freezing rain, sleet, snow, or hail. It is the primary connection in the water cycle that provides for the delivery of atmospheric water to the Earth. Most precipitation falls as rain.

Explanation:

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Explanation:

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Answers

Explanation:

2moles of NaOH -> 2moles of H2O

so the number of moles r equal.

hence moles of H2O is 12.5

HELLPP!!!
What property allows objects to be subject to gravity?
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mass
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Answer: i gotcu the answer is mass

Explanation: The more weight of the object the more its subject to gravity like a feather barley is while a bowling ball smashes into the ground :D

The property allows objects to be subject to gravity is mass. Therefore, option B is correct.

What is mass ?

Mass is a physical body's total amount of matter. Inertia, or the body's resistance to acceleration when a net force is applied, is also measured by this term.

The strength of an object's gravitational attraction to other bodies is also influenced by its mass. The kilogram serves as the SI's fundamental mass unit. The amount of matter object present is also known as mass.

The amount of matter that makes up every item or body is the greatest way to understand mass. Everything that we can see has mass. Examples of objects with mass include a table, a chair, your bed, a football, a glass, and even air. The mass of a thing determines whether it is light or heavy.

Thus, option B is correct.

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Explanation:

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Answer: Anyway, the basic reason why the planets revolve around, or orbit, the Sun, is that the gravity of the Sun keeps them in their orbits. ... If the Sun weren't there, the Earth would travel in a straight line. But the gravity of the Sun alters its course, causing it to travel around the Sun, in a shape very near to a circle

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mass
inertia
acceleration

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Answer:

Mass

Explanation:

Which is a liquid that is used to absorb and release thermal energy?

coolant
lubricant
grease
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Answers

Answer

grese

Explanation:

Any liquid could absorb and release thermal energy. However, a refrigerant or a coolant absorbs heat and releases it to any area faster than any ordinary liquid such as water. So to complete the sentence: A refrigerant/cooler is a liquid that absorbs and releases thermal energy

Answer:

The correct answer is coolant.

Hope it helps. :)

Is it okay if you help me? I'm kind of in a tight spot here. Tysmmmmmmmmmmmmm o(❁´◡`❁)o!!

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Answer:

the answer is true

Explanation:

it's just true

constrast a mixture and a compound , how are. they different?​

Answers

Answer:

A mixture is composed of two or more elements or compounds in a non-fixed ratio, which means you can vary the amount of substance in a mixture. A compound is composed of two or more elements in a fixed ratio, so you cannot vary the amount of each element in a compound

Answer:

mixture retains property of combing substances while compound has new properties that are different from combing elements...

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Answers

94 neutrons
The atomic number and the proton and electron numbers are the same.


You arrive at English class 45 seconds after leaving math which is 100
meters away. How fast did you travel?

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Answer:

4.97097

Explanation:

You traveled 4.97097 mph.

If we had 79.3 grams of Xe, would we expect a volume that is
greater than or less than that obtained with neon?
a
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b Equal
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Answer:less than

Explanation:

If we had 79.3 grams of Xe, we would expect a volume that is less than obtained with neon. So, the correct option is (C).

What is Density?

Density is defined as the mass per unit volume of a substance. The most commonly used symbol for density is ρ, although the Latin letter d can also be used. Density is defined as mass divided by volume:

[tex]{\displaystyle \rho ={\frac {m}{V}}}[/tex]

where ρ is density,

m is mass, and

V is volume.

The mass contained per unit volume of an object is known as density. where the SI unit of density is kilogram per cubic meter [tex](kg/m^3).[/tex] Density is inversely proportional to volume, so the density of Xenon is [tex]5.894 kg/m^3[/tex] while the density of neon is 0.89994 kg/m³. So, if density is more than volume will be less and vice versa. In this case, density of Xenon is more as compare to neon so, the volume of neon will be more.

Thus, if we had 79.3 grams of Xe, we would expect a volume that is less than obtained with neon. So, the correct option is (C).

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if youre good at chemistry u better help me now please!

Answers

Answer:

letter B is the answer

Explanation:

just take a look at the atoms

Answer:

B.) Only elements have one kind of atom.

Explanation:

An element consists of only one type of atom, while a compound consists of two or more types of elements

Which of the following statements is FALSE?
The microscopic size of cells enable them to function properly.
Most organisms on Earth are multi-celled.
Some cells can be shaped like a ball.
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Answers

Answer:

The answer is functioning properly ok dude?

Explanation:

Answer: "The microscopic size of cells enable them to function properly.

Most organisms on Earth are multi-celled." is false

Explanation:

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Answer:

B. A measure of the average kinetic energy of a substance.

Explanation:

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Brainlist pls!

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Explanation:

protons.

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Acids turn litmus paper red, while bases make litmus paper turn blue.

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Acids generally taste sour, while bases have a bitter taste.

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Answers

Ernest Rutherford i believe
Ernest Rutherford’s

19)
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When atoms are excited they emit light of certain wavelengths which correspond to different colors. Each element produces a unique set of spectral lines. ... Since no two elements emit the same spectral lines, elements can be identified by their line spectrum.

explain what keeps the electrons confined in the space surrounding the nucleus

Answers

Answer:

Electrons are trapped inside the atom because of the attraction forces with positively charged protons that are found in the nucleus.

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Explanation:

All the planets in our solar system come into view. But at this distance, only Jupiter and Saturn would be visible with the naked eye.

Which change will cause gravitational force between and a soccer ball to increase?

Answers

Answer:

Moving the balls closer together. The distance decreases and force increases.

how many moles of oxygen gas are produced in the decomposition of 5.00g of potassium chlorate?
Given: KClO3= O2+KCl

Answers

Answer:

0.0612 moles of O2 produced

Explanation:

     First we convert from grams of Potassium Chlorate to moles..

Amu = 122.5

5.00g / 122.5 g = 0.0408163265 moles of Potassium Chlorate

    Now we need to use the chemical equation to find the ratio of Potassium Chlorate to Oxygen... But first, we need to balance it

Original Chemical Equation : KClO3 = O2 + KCl

Balanced Chemical Equation : 2KClO3 = 3O2 + 2KCl

     Now we will use the balanced chemical equation to find the ratio of Potassium Chlorate to oxygen (in order to convert to moles of oxygen for our answer)

We can see that for every 2 moles of Potassium Chlorate that are decomposing, we have 3 moles of oxygen gas produced.

So, we will set up our conversion factor like this:

0.0408163265 moles KClO3 *   3 moles Oxygen

                                                     -------------------------

                                                     2 moles KClO3

When we solve for this, we see that there are 0.0612244898 moles of O2 produced, or 0.0612 moles of O2 produced

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Answers

The answer is 155 pm, hope this helps!

Why is systems thinking important?
Systems thinking ignores the details of a system and just looks at its overall function.
Systems thinking ranks the parts of a system in terms of most important to least.
Systems thinking allows us to understand all the parts that make up the whole system.
Systems thinking examines how a system affects human life.

Answers

Answer:

Systems thinking allows us to understand all the parts that make up the whole system.

Explanation:

Just took the test

The systems thinking important because, Systems thinking allows us to understand all the parts that make up the whole system. Therefore, option C is correct.

What system thinking ?

By considering the world's complexity in terms of links and entire rather than breaking it down into its component components, systems thinking helps us make sense of how complicated the world is. It has been applied as a method for investigating and producing efficient action in challenging situations.

By using a deeper grasp of the surrounding structure and its constituent parts rather than relying just on previous events, systems thinking gives a technique to more accurately forecast future outcomes.

Systems thinking is a discipline in management that focuses on understanding a system by looking at the connections and interactions between the different parts that make up the entire of that defined system. The concept of the "entire system" is a way of looking at an entire organization in relation to its surroundings.

Thus, option C is correct.

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Which of the following is NOT an atom that hydrogen bonds?

Select one:
a. Oxygen
b. Nitrogen
c. Fluorine
d. Sodium

Answers

Answer:

The answer is D sodium

Explanation:

How many moles of Al would be produced from 20 moles of Al2O3?
2Al2O3
->
4A1 + 302

Answers

Answer:

[tex]\displaystyle 40 \ mol \ Al[/tex]

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Stoichiometry

Using Dimensional AnalysisExplanation:

Step 1: Define

[RxN - Balanced] 2Al₂O₃ → 4Al + 3O₂

[Given] 20 mol Al₂O₃

Step 2: Identify Conversions

[RxN] 2 mol Al₂O₃ → 4 mol Al

Step 3: Stoich

[DA] Set up:                                                                                                     [tex]\displaystyle 20 \ mol \ Al_2O_3(\frac{4 \ mol \ Al}{2 \ mol \ Al_2O_3})[/tex][DA] Multiply/Divide [Cancel out units]:                                                         [tex]\displaystyle 40 \ mol \ Al[/tex]

Step 4:Check

Follow sig fig rules and round. We are given 1 sig fig.

Since our final answer already has 1 sig fig, there is no need to round.

Picture a neutral Satom. This neutral atom will have
valence electrons. To reach a more stable configuration, this atom will
(gain, lose) electrons. The charge of the ion that forms will be
ASAP PLEASEE

Answers

Answer:

it will have 6 valence electrons

it will gain electrons

charge will be 2-

If you know the atomic number and the mass number of an atom of any element, you can determine the atom's composition.

A:True
B:False​

Answers

True. i hope its correct, have a good day. stay happy and stay safe

Answer:

A:true

Explanation:

The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules.

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